Support for concrete reinforcing steel

ABSTRACT

An elongated support for concrete reinforcing steel which can be driven into the sub-base and which is provided with a slot in the upper end to receive the steel and support same. The upper end portions bounding the slot are then bent over to secure the steel in place.

United States Patent Inventor Oldrich Munchinsky General Delivery, Outlook, Saskatchewan, Calif.

Appl. No. 804,861

Filed Apr. 6, 1969 Patented Mar. 23, 1971 Priority July 12, 1968 Great Britain SUPPORT FOR CONCRETE REINFORCING STEEL 1 Claim, 5 Drawing Figs.

U.'S. Cl 52/678, 52/684 Int. Cl E04c 5/16, E04c 5/18 Field of Search 52/679- [56] References Cited UNITED STATES PATENTS 644,938 3/1900 Orr 52/680 741,412 10/1903 Purdy 52/680 1,212,843 1/1917 Struchen 52/680 1,573,069 2/1926 Jensen 52/680 1,673,360 6/1928 Hauf 52/684 1,783,391 12/1930 Schorretal. 52/679 Primary ExaminerFrank L. Abbott Assistant Examiner-James L. Ridgill, Jr Attorney-Kent and Ade ABSTRACT: An elongated support for concrete reinforcing steel which can be driven into the sub-base and which is provided with a slot in the upper end to receive the steel and support same. The upper end portions bounding the slot are then bent over to secure the steel in place.

ATTORNEY SUPPORT FOR CONCRETE REINFORCING STEEL This invention'relates to new and useful improvements in supports for concrete reinforcing steel.

It is conventional to form this reinforcing from a plurality of steel rods which are laid at right angles to one another in grid configurationand held together by tie wires-Normally this grid is laid on the sub-base. and concrete is then poured whereupon the grid is hooked upwardly manually so that it is disposed substantially halfway through the thicknessof the concrete poured.

Alternatively some form ofcradle or support may be proi a 2 responding parts in the different figures.

Proceeding therefore to describe the invention in detail, reference to FIGS. I and 2 will show that the device consists of an elongated member I0 preferably stamped from metal or the like and narrowing down from the upper end 11 towards the lower end 12 to assist in the penetration of the device within the sub-base shown schematically in FIG. 4 and invided to support the grid at the desired height above the base. 1

However, these are individual members and do not penetrate the sub-base and the reinforcing rods have to be wired to these cradles. r

Both of these methods are not-only time consuming but are difficult to control accurately inasmuch as the position of the reinforcing steelin the final setting-up of the concrete is of the utmost importance. t

The present invention makes the placing of reinforcing rods relatively easy and not only is the height controlled but the attaching means form part of the supports thus eliminating the need for separate tie wires.

Advantages of the invention arefthe reduction in costs of pouring concrete, simplifying the placing and attaching of the reinforcing steel and improving the quality of poured concrete. 7

These advantages are due to the fact that no tie wires are required, no stools orcradles are required and locking and lifting of the reinforcing steel is eliminated.

This allows coarser more economical aggregates to be used and eliminates excessive harmful vibrating. No shifting of the reinforcing steel can occur during the pouring thus allowing accurate anchorage of construction joints. The device is maintained in proper elevation of the reinforcing steel during the pour for maximum strength and allows reduced water content mixes because of reduced obstructions, thus cutting time arid costs and improving quality.

Summarizing the devices comprise vertical bars driven into the sub-base with the depth being limited, said bars having slotsin the upper end adapted to receive the reinforcing steel. The side members defining the slots can theri be bent over the reinforcing steel thus holding it firmly in position.

Another advantage of the invention, of course, is the fact that it is simple in construction, economical in manufacture, and otherwise well suited to' the purpose for which it is designed. v 1

With the foregoing in view, and such other or further purposes, advantages or novel features as may become apparent from consideration of this disclosure and specification, the

present invention consists of, and is hereby claimed to'reside in, the inventive concept which is comprised, embodied, em-

braced, or included in the method, -.process, construction,

composition, arrangement or combination of parts, or new use of the reinforcing steel to the top of.-one of the elongated members.

In the drawings, like characters of reference indicate corof any of the foregoing, of which concept, one or more dicated by the reference character I3.

Extending downwardly from the upper end 11 is an elongated slot 14 situated centrally thus forming a pair of reinforc ing steel gripping members l5.

This slot is wide enough to receive conventional reinforcing steel 16 and deep enough so that one length specifically designated 16A, when disposed on the base 17 of the slot, can support a further length of reinforcing steel situated at right angles thereto and specifically designated by the reference character 16B. The upper ends 18 of the members 15 extend above the reinforcing steel member 163 by an amount sufficient to enable them to be bent over the steel as clearly shown in FIG. 5. It is desirable that the reinforcing steel member 16 be placed so that one member 18 can be bent over the steel in one direction and the other member can be bent over the steel in the opposite direction, thus forming an interlocking action holding both reinforcing steel members firmly in position.

In actual practice the member 168 will be laid at an acute angle to the member 16A and then moved to the right angular position whereupon the members 15 can be bent over as clearly shown. This bending over can be accomplished by a special tool (not illustrated) or they can be hammered over as desired.

Situated below the slot 14 is a plurality of apertures I9 through which a transverse pin 20 maybe placed thus limiting the depth of penetration of themembers 10 within the subbase. These transverse members 20 also provide support and prevent further'penetration so that planks can be laid across the reinforcing steel so that, concrete can be moved to the desired pouting pouring position by means of wheelbarrows or the like.

Finally it should be noted that when the elongated members I0 are stamped out, they are creased longitudinally as shown by the line 21 so that two wing sides 22 are formed as shown in FIG. 3. This gives added rigidity and stilfens the elongated members.

Various modifications can be made within the'scope of the inventive concept which is herein disclosed and/or claimed. Accordingly, it is intended that what is set forth should be regarded as illustrative of such concept and not for the purpose of limiting protection to any particular embodiment thereof,

1 and that only such limitations should be placed upon the scope of protection to which the inventor hereof is entitled as justice dictates.

Iclaim: v g 1; A support for concrete reinforcing steel rod, said support comprising a vertically elongated and downwardly tapered member having a pointed lower end for insertion in a sub-base the relatively wide upper end portion of said member being provided with an upwardly open vertical slot for reception of a reinforcing steel rod, regions of said upper end portion of said member at opposite sides of said slot constituting a pair of bendable fingers which are adapted to be bent around and retainingly engage another reinforcing steel rod superposed on the first mentioned rod in crossing relation, the intermediate portion of said member below said slot being provided with a vertical row of apertures, and a stop pin positioned selectively in one of said apertures to adjustably limit 7 the depth of insertion of said member in the sub-base. 

1. A support for concrete reinforcing steel rod, said support comprising a vertically elongated and downwardly tapered member having a pointed lower end for insertion in a sub-base the relatively wide upper end portion of said member being provided with an upwardly open vertical slot for reception of a reinforcing steel rod, regions of said upper end portion of said member at opposite sides of said slot constituting a pair of bendable fingers which are adapted to be bent around and retainingly engage another reinforcing steel rod superposed on the first mentioned rod in crossing relation, the intermediate portion of said member below said slot being provided with a vertical row of apertures, and a stop pin positioned selecTively in one of said apertures to adjustably limit the depth of insertion of said member in the sub-base. 